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Part: MAX4001EUA
Category:
Analog & Mixed-Signal Processing
Description: MAX4000, MAX4001, MAX4002 2.5GHz 45dB Rf-detecting Controllers
Company: Maxim Integrated Products
Datasheet: Download MAX4001EUA datasheet File size : 155 kB
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Datasheet text preview:
19-2288; Rev 1; 7/02
2.5GHz 45dB RF-Detecting Controllers
General Description
The MAX4000/MAX4001/MAX4002 low-cost, low-power logarithmic amplifiers are designed to control RF power amplifiers (PA) operating in the 0.1GHz to 2.5GHz frequency range. A typical dynamic range of 45dB makes this family of log amps useful in a variety of wireless applications including cellular handset PA control, transmitter power measurement, and RSSI for terminal devices. Logarithmic amplifiers provide much wider measurement range and superior accuracy to controllers based on d i o d e detectors. Excellent temperature stability is achieved over the full operating range of -40°C to +85°C. The choice of three different input voltage ranges eliminates the need for external attenuators, thus simplifying PA control-loop design. The logarithmic amplifier is a voltage-measuring device with a typical signal range of -58dBV to -13dBV for the MAX4000, -48dBV to -3dBV for the MAX4001, and -43dBV to +2dBV for the MAX4002. The input signal for the MAX4000 is internally AC-coupled using an on-chip 5pF capacitor in series with a 2k input resistance. This highpass coupling, with a corner at 16MHz, sets the lowest operating frequency and allows t h e input signal source to be DC grounded. The MAX4001/MAX4002 require an external coupling capacitor in series with the RF input port. These PA controllers feature a power-on delay when coming out of shutdown, holding OUT low for approximately 5µs to ensure glitchfree controller output. The MAX4000/MAX4001/MAX4002 family is available in an 8-pin µMAX package and an 8-bump chip-scale package (UCSPTM). The device consumes 5.9mA with a 5.5V supply, and when powered down the typical shutdown current is 13µA. o Variety of Input Ranges MAX4000: -58dBV to -13dBV (-45dBm to 0dBm in 50) MAX4001: -48dBV to -3dBV (-35dBm to +10dBm in 50) MAX4002: -43dBV to +2dBV (-30dBm to +15dBm in 50) o Frequency Range from 100MHz to 2.5GHz o Temperature Stable Linear-in-dB Response o Fast Response: 70ns 10dB Step o 10mA Output Sourcing Capability o Low Power: 17mW at 3V (typ) o Shutdown Current 30µA (max) o Available in an 8-Bump UCSP and a Small 8-Pin µMAX Package
Features
o Complete RF-Detecting PA Controllers
MAX4000/MAX4001/MAX4002
Ordering Information
PART MAX4000EBL-T MAX4000EUA MAX4001EBL-T MAX4001EUA MAX4002EBL-T MAX4002EUA TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PINPACKAGE 8 UCSP-8 8 µMAX 8 UCSP-8 8 µMAX 8 UCSP-8 8 µMAX TOP MARK ABF -- ABE -- ABD --
Applications
Transmitter Power Measurement and Control TSSI for Wireless Terminal Devices Cellular Handsets (TDMA, CDMA, GPRS, GSM) RSSI for Fiber Modules
Pin Configurations appear at end of data sheet.
Functional Diagram
SHDN VCC OUTPUT ENABLE DELAY + gm X1 OUT
DET RFIN 10dB
DET
DET
DET
DET
CLPF 10dB 10dB 10dB V-I OFFSET COMP LOWNOISE BANDGAP SET
MAX4000
UCSP is a registered trademark of Maxim Integrated Products, Inc.
GND (PADDLE)
________________________________________________________________ Maxim Integrated Products
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For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
2.5GHz 45dB RF-Detecting Controllers MAX4000/MAX4001/MAX4002
ABSOLUTE MAXIMUM RATINGS
(Voltages Referenced to GND) VCC .........-0.3V to +6V OUT, SET, SHDN, CLPF .....-0.3V to (VCC + 0.3V) RFIN MAX4000 ....+6dBm MAX4001 ...........+16dBm MAX4002 ...........+19dBm Equivalent Voltage MAX4000 .........0.45VRMS MAX4001 ...........1.4VRMS MAX4002 ...........2.0VRMS OUT Short Circuit to GND .........Continuous Continuous Power Dissipation (TA = +70°C) 8-Bump UCSP (derate 4.7mW/°C above +70°C).........379mW 8-Pin µMAX (derate 4.5mW/°C above +70°C) ....362mW Operating Temperature Range ...-40°C to +85°C Storage Temperature Range .....-65°C to +150°C Lead Temperature (soldering , 10s) ........+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = 3V, SHDN = 1.8V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER Supply Voltage Supply Current Shutdown Supply Current Shutdown Output Voltage Logic-High Threshold Logic-Low Threshold SHDN Input Current SET-POINT INPUT Voltage Range (Note 2) Input Resistance Slew Rate (Note 3) MAIN OUTPUT Voltage Range Output-Referred Noise Small-Signal Bandwidth Slew Rate BW V OUT High, ISOURCE = 10mA Low, ISINK = 350µA From CLPF From CLPF VOUT = 0.2V to 2.6V 2.65 2.75 0.15 8 20 8 V nV/Hz MHz V/µs V SET RIN Corresponding to central 40dB 0.35 30 16 1.45 V M V/µs SYMBOL VCC ICC ICC V OUT VH VL ISHDN SHDN = 3V SHDN = 0 -0.8 5 -0.01 VCC = 5.5V SHDN = 0.8V, VCC = 5.5V SHDN = 0.8V 1.8 0.8 20 CONDITIONS MIN 2.7 5.9 13 100 TYP MAX 5.5 9.3 30 UNITS V mA µA mV V V µA
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2.5GHz 45dB RF-Detecting Controllers
ELECTRICAL CHARACTERISTICS
(VCC = 3V, SHDN = 1.8V, fRF = 100MHz to 2.5GHz, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER RF Input Frequency RF Input Voltage Range (Note 4) SYMBOL fRF MAX4000 VRF MAX4001 MAX4002 MAX4000 Equivalent Power Range (50 Terminated) (Note 4) PRF MAX4001 MAX4002 fRF = 100MHz Logarithmic Slope VS fRF = 900MHz fRF = 1900MHz MAX4000 fRF = 100MHz MAX4001 MAX4002 MAX4000 Logarithmic Intercept PX fRF = 900MHz MAX4001 MAX4002 MAX4000 fRF = 1900MHz RF INPUT INTERFACE DC Resistance Inband Resistance Inband Capacitance RDC RIB CIB MAX4000, internally AC-coupled (Note 6) MAX4001/MAX4002, connected to VCC (Note 5) 2 2 0.5 k k pF MAX4001 MAX4002 -62 -52 -47 CONDITIONS MIN 100 -58 -48 -43 -45 -35 -30 22.5 25.5 25 29 -55 -45 -40 -57 -48 -43 -56 -45 -41 dBm -49 -39 -34 TYP MAX 2500 -13 -3 +2 0 +10 +15 28.5 mV/dB dBm dBV UNITS MHz
MAX4000/MAX4001/MAX4002
Note 1: All devices are 100% production tested at TA = +25°C and are guaranteed by design for TA = -40°C to +85°C as specified. All production AC testing is done at 100MHz. Note 2: Typical value only, set-point input voltage range determined by logarithmic slope and logarithmic intercept. Note 3: Set-point slew rate is the rate at which the reference level voltage, applied to the inverting input of the gm stage, responds to a voltage step at the SET pin (see Figure 1). Note 4: Typical min/max range for detector. Note 5: MAX4000 internally AC-coupled. Note 6: MAX4001/MAX4002 are internally resistive-coupled to VCC.
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